Lock for freight-car doors.



G. T. PETTICREW.

LOCK FOR FREIGHT CAR DOORS.

APPLICATION FILED NOV. 5, 1917.

Patented May 28, 1918.

1 g will GIBSON '1. rE'r'rIcnEw, or DEER LODGE, MONTANA.

LOOK FOR FREIGHT-CAR DOORS.

Specification of Letters Patent. Patented May 2%, 191%..

Application filed November 5, 1917. Serial No. 200,238.

To all whom it may concern:

Be it known that I, GIBSON T. PETTICREW, a citizen of the United States, and resident of Deer Lodge, Powell county, State of Montana, have invented certain new and useful Improvements in Looks for Freight- Oar Doors, of which the following is a specification.

My invention relates to looks for freight oar doors, and comprises novel features of construction and combinations of parts which will be specifically defined in the claims.

The object of my invention is to provide a more eflicient lock and to simplify the construction as fullyas efficiency will permit. One specific object of my invention is to provide a lock which will at all times be in position for automatic engagement if the door be closed and one which has a minimum of projecting parts.

In the accompanying drawings I have shown my invention in the form which is now preferred by me.

Figure 1 shows, in perspective, adjacent parts of a door and door jamb having the lock mounted thereon.

Fig. 2 is a vertical section through the same parts on the line of the locking bolt.

Fig. 3' is a horizontal section through the parts on-the line of thelocking bolt.

Fig. 4 is a perspective of the locking bolt and its attached operating arms, the catch block being shown by dotted outline.

The standard type of freight car door is one in which the door is mounted to move upon guides along the outer face of the car sides. It is for this type of door that my device is intended to be applied. I have, however, not illustrated the mounting of the door as this is so well known as to make it unnecessary.

Cars having this type of doors employ a jamb 1 projecting approximately the thickness of the door, against which the face of the door abuts. Through this jamb, paralleling the side face of the car and the direction of movement of the door, is made a hole for receiving the locking bolt 2. Faceplates- 4 and 40 may be used to strengthen the jamb and to furnish a stronger support for the bolt.

Both ends of the bolt project beyond the jamb. That end toward the door has a transverse slot 21 and has its tip beveled or coned, as at 22. The other end has an operating arm 5 secured thereto by which it may be turned. This arm is preferably secured so that it may itself be turned upon its axis. Tothis end I have shown the bolt as provided with a collar 23 which hasa bore 24 for the reception of a reduced end section of the arm 5, this being prevented from coming out, as by riveting over its end. On the edge of the door 9 which contacts with this j amb, is placed a casing 6, preferably made of rolled plate bent intoshape. Thishas a tongue forming an extension of the upper end of the central section 60,

which is bent inward and downward, and

with its tip bent forward. The part 62 forms the upper wall, part 63 the inner side Wall and 64 the bottom wall of a chamber in which is a looking or catch block 7. This block is of a size to move vertically with ease and enough to permit locking and unlocking.

The face 60 has a hole 61 therein, for the reception of the locking bolt 2. The body of the door is. also bored, as at 90, for the same purpose and the horizontal bottom end 64 of the tongue as well as the lower end of the vertical wall 63, are centrally cut away to pass the bolt end, thus forminga slot 65 in the metal.

Thehorizontal end section 64 of the plate is at such a level as to support the block high enough that the inclined end 22 of the bolt 2 may raise the block and permit passage of the bolt until the block drops into the groove 21 of the bolt, when the door will be locked until the block is raised out of the groove.

Over the other end of the bolt is placed a casing 3, forming a chamber between it and plate 40 of depth suflicientto receive the collar 23. This is open at the front and,

top an amount suflioient to permit swinging the crank arms 5 between the horizontal and vertical positions. The shoulder 31 forms a stop for the horizontal position and 30 for the Vertical position. i The horizontal position of the arm 5 cor responds with the position of the bolt in which the bottom of the groove 21 in the bolt is horizontal, or that of locking engagement with the catch block 7. If the arm 5 be thrown upward, the bolt will be rocked, and the block 7 raised until the bolt is freed. The door may then be moved back.

extension bar 52 is pivoted by pin 51,

to the crankarm 5, this pivot being located just far enough out to permit the extension arm swinging over the .face of the jamb. This extension is Iengenoaghte overla the edge of the door and its-,outer end is 5 provided with means adapted to engage a membercarried by the face of the door, so that a seal of any approved type may be used to seal the two tegether, I

The construction preferred is to have a =tongue 5'5 projecting trom-the-sideot the casingb'and provide'the end'ofthe arm-52 with a slot 53 "to fit over the tongue 55, and

provide each of "these parts with registrable .holes 54 and 57, through avhich standard 'sealin'g strip may "law-passed. 'I'-m'ay "also, if desiredyprovide'" the" tongue 55 with a hole "56, Which would come outside the 'lever or erm 52,f'through ivhich may be placed a se- "eu'ring pin, or-the hasp eta padlock.

When the door is opened, i the extension bar 52 Will drop 1 into vertical position, 1 be- 'cause the connectionof the crank arm *5 vvith the b'olt is a-rotative one. In this 'positionf-itis out'of-the way and not likely to be damaged.

What I claim as-my invention'is': 1. A car-door loclr'comprising a rotatively *mo'unted bolt placed With "its axis in 'line with the direction of movement of--' the door at closing and with an end projectin g, "said projecting end having a transverse groove,

socket piece plz'rcecl "to receive said projecting end wvhen the door -isclosed, a block movably 1 mounted in said socket piece and i adapted to be entered in .the transverse groove of thebolt, and means'for turning the' 'belt on'its axis-to displace said block.

2. A car door lockcomp'rising a rotati'vely "InOuIited bQll' having -'a transverse 40 'groove near one end and held against endfvvise reciprocation, W-ith the grooved iend pr'ej'ecting, socket member 'placed' to re- "ceive theproj ecting grooved end of the bolt, a movable catch associated With the socket -member-=andadaptedto enter the transverse groove of the bolt Whenthefbolt-is inserted Within the socket, the bolt With its associated parts and *the socket member "With its-{as- =soc'iated parts "being mounted,- one on -the door and the other"- on; the door amb, and an arm secured to the belt andi-proj ecting laterally therefrom, by which thebolt may *betarned; a

3. 'A' 'car door- -lock comprising a bolt 'rotatively mounte'din' the door 3' an'ib v'v ith-its (axis parallel the line of i movement er the *fdoor in' closing; one end of said boltwprojecting-beyond the face'o f-the amb and having a 'transverse -groove Fon'its upper side, a socket member mounted on the door toreceive the end of the bolt, sai'd' socket member containing a ohamber extending vnup- 'Wardly from the bolt-receiving socket, a vertically movab'le catch block fitting loosely insaid chamber-"and adapted. to 'enter the transverse groove in the bolt, and means for turning the bolt to release it.

4. Acardoorlock "comprising a bolt rotatively mounted in the door jamb with its axis parallel the line of movement of the door in closing, one end of said bolt projecting beyond the face of the jamb and having :a tr-ansverse groove on its upper side, a socket member mounted on the door to receive the projecting-end-of the bolt, said socket member containing a chamber extending-upwardly from tliebolt-receiving socket, a catch block vertically movable in said chamber andadaptedto enter the transverse groove in the-bolt,- a crankarm secured'to 5 the bolt and accessible ior manual 1 engagement, and means for normally holding the bolt-With its transverse groove up.

5. -A-ca r door lockcomprising bolt' ro- -tativel-y mounted in the door jamb WltllltS I axis parallel the line of movement of the door in closing, one end of said boltpro- "jecting beyond the face of thevjamb and having a' transverse grooveon its upper side, 'asocket member mountedon the door to receive the'end of thebolt,=said'-socket member containing a chamber extending upwv-ardlyfrom the bolt-receiving socket, a catch block vertically movable in said chamber and adapted toenter the transverse groove in the bolt, a crank arm secured to the-bolt to turn it and seal-lockin mechanism for holding the bolt in locking position.

'6. A car door lock comprising abolt rotatively mounted in the door jamb avith its axis parallel the line of movement of the-door in closing, one end ot'said bolt projecting beyond the face ofthe amb and having a transverse groove on its upper side, a socket member mounted onthe door to receive the end of the bolt,said socket member containing-a chamber extending upwardly from the bolt-receiving socket, a catch block vertically movable in said "chamber and-adapted to enter the transverse groove in the bolt, an arm :secured to the bolt forturning it and projecting just beyond the face of thejamb,and an extension lever pivotedto-the end of this arm and adapted to swing over thejamb andioverl'ap 'the door, and means for sealing'this extension lever to the door.

7. 'A car door lock comprising a bolt rotatively mounted in the 'door jamb' with its axis parallel'the'line of movement of the door in closing, one endof saidboltxpro- .jecting beyond the face of the jamb-and having a transverse groove on its upper side, a socket member' mounted on: the door to receive the end of the bolt,-.-said socket anembercontaining 'chamber'extending upwardly from vthe bolt-receiving sooket,a catch block vertically movable insaid'chamher and adapted 'to enter the transverse groove in the bolt, an arm axially pivoted uopn the bolt and projecting just beyond the face of the jamb, an extension lever connected by the outer end of said arm by a transverse pivot and adapted to overlap its end on the door, a member carried by the door in position to engage the end of said extension lever, said member and the end of the extension lever being provided with registrable seal-receiving openings.

8. A car door lock comprising a rotative bolt extending with its axis paralleling the direction of movement of the door in closing and with an end projecting and provided with a transverse groove, a laterally projecting operating handle secured to the other end of said bolt, a bolt casing having two separated walls lying one at each side said handle, the chamber formed by said walls being open to permit the projection and sWing'ing of said arm between the positions corresponding with the locked and unlocked positions of the bolt, and a socket member for receiving the projecting end of the bolt and having a "ertically movable locking block adapted to enter the transverse slot in the bolt.

- 9. A lock for sliding doors comprising a bolt mounted to turn and with its axis extending in the direct-ion of the movement of the door, the end of this bolt projecting and having a transverse notch, an arm projecting laterally from the bolt, a casing inclosing said arm and having an opening permitting the swinging movement of the arm needed to unlock the bolt, a cooperative member secured to the other part of the door construction and having an opening for the reception of the projecting end of the bolt, said member having a partition wall inward from its outer face forming a chamber into which the lower end of the bolt enters, and a locking block freely slidable vertically in said chamber and adapted to enter the transverse notch in the bolt.

10. A look for sliding doors comprising a bolt mounted to turn and with its axis extending in the direction of the movement of the door, the end of this bolt projecting and having a transverse notch, an arm projecting laterally from the bolt, a casing inclosing said arm and having an opening permitting the swinging movement of the arm needed to unlock the bolt, a cooperative member secured to the other part of the door construction and having an opening for the re ception of the projecting end of the bolt, said member having a partition wall inward from its outer face forming a chamber, the lower end of said partition extending outward toward the outer face of the member to form a support for the locking block and having a central slot for the reception of the end of the block, and a locking'block freely sliclable vertically in said chamber and adapted to be raised by the end of the bolt and to then enter the transverse slot in the bolt.

11. A look for sliding doors comprising two members mounted respectively upon the door and the door jamb, one of said members having a bolt mounted to turn upon its axis and extending in the direction of the movement of the door, the end of said bolt projecting and having a transverse slot and having an upper beveled surface between said slot and its outer end, an arm secured to and extending transversely from the opposite end of the bolt, a casing plate outwardly of said arm and in which the bolt is journaled, said plate having stop surfaces limiting the swing of the arm between locked and unlocked positions of the bolt, the other member of the lock having a chamber into which the projecting end of the bolt enters, a locking member vertically movable in said chamber and adapted to enter the transverse slot in the bolt and a support for said locking member holding it in position for engagement by the beveled end of the bolt to be lifted thereby.

Signed at Deer Lod 'e, Montana, this 25th day of October, 191

GIBSON T. PETTIGREVV.

copies of this patent may be obtained for five cents each, by addressing the Commissioner or Eatente, Washington, D. 0. 

